I purchased and installed my K&N drop-in filter for my 09 GTS. I was just wondering if the drop-in is supposed to make the engine louder or have a slight growl under medium to hard acceleration. I am trying to find out if I did not line up the seal correctly, and if that could be causing the growl. I can definitely hear the air rushing into my engine, but I wasn't sure if there should be that vibrating/rumbling growl with it. Thanks.

 

it's pretty tough to mess up the install of a filter... but if you are worried try flipping it upside down and seeing if it fits, if it doesnt you have it installed correctly...

 

Lol yeah that is what I figured, I just wasn't sure what kind of results I could expect other than low hp gain. Seemed easy enough to install just am not used to the growl so was just wondering if it was normal.

 

Yeah thats how it always is. I did a short ram one on my evo and did one on my dads tacoma. Its a "little" bit louder! But everything is ok

 

shouldn't be much change at all in sound... check that everything is lined up well. there have been people reporting that the bottom of the airbox is hard to get clipped with the k&n

 

Awesome thanks for the tip. I will check it again tonight. The bottom should be sunk in between the two halves and not flush with them correct?

 

thats exactly right. i have the K&N on mine rite now. its the bottom two clips. take the filter out. get the bottom clips on first thenn slide the filter in. theres ur solution.

 

Crrappppp. Thanks so much, thats got to be my problem. I'll be doing some adjusting again tonight! Thanks again everyone for all the help!

 

i can guarantee you this is the problem the bottom clips are hard to get in place
but once you do the car should sound normal again.

 

how the filter..?? does it gain some hp after installing it..?? I'm thinking of replace mine too...^^

 

honeslty. not alot of gains i just unclip the bottom clips to make it sound louder haha

try taking the air tunnel out and just have the air box...its LOUD =D

 

i noticed that if you take out the tunnel, you lose high-end torque, and your engine works a lot harder moving at highway speeds.